Improvement in mining-drills



G. F. WI LKINSON, L. S. ALLISON, PQRILEY &

MOGHAMER Mining-Drill.

Patented Nov. 4, 1879.

INVENTOR fl/WM/ BY ATTOBNE WITNESSES UNITED STATES PATENT OFFICE.

CHARLES F. WILKINSON, L. SANDIDGE ALLISON, PETER RILEY, AND ARIOMOGHAMER, OF HAZLETON, PENNSYLVANIA.

IMPROVEMENT IN MINING-DRILLS.

Specification forming part of Letters Patent No. 221,378, dated November4, 1879 application filed May 1, 1879.

To all whom it may concord Be it known that We, CHARLES F. WILKIN- SON,L. SANDIDGE ALLIsoN, PETER Bauer,

and ARIO MOCHAMER, of Hazleion, in the county of Luzerne and State ofPennsylvania, have invented a new and'Improved Mining- Drill, of whichthe followingis a specification.

Our improvements relate to drilling apparatus for miners, and areespecially adapted to coal-mining.

The invention consists in combining a tubular postwith inclinedapertures, a nut-carrying screw rod, and a screw socket having spurspivoted to its head; also, in combining a collar on the post and a sidescrew on the collar with a drill-holder having a nut with lugs, a nuthaving tongue on cross-pin, a setnut, and a screw, all as hereinafterdescribed. In the accompanying drawings, Figure 1 is a side elevation ofthe apparatus, the post belength, having its outer end closed by a nutwhich carries the screw-rod a. ()n the inner end of screw a is ascrew-socket, b, that is fitted to turn freely on a, and has attached toitthe bar or head 0,which carries the loosely-hung spurs d.-

The spurs d are preferably four in number, and hungto project from thehead 0, and are adapted for passing through the inclined apertures e inpost A, which apertures are shaped to catch the tapered ends of thespurs and cause them to project outward as the head cis moved forward byscrew a. The end of screw a, projecting from the outer end of the post,is squared for the application of a wrench or crank-handle whereby thescrew is to be turned.

This portion of the apparatus is used by drilling a hole in the coal ofa size to receive the post loosely, which is to be inserted with postthe operation of the screw will move head 0 forward, and the spurs willbe driven into thecoal at the sides of the tube, thereby act-. ing asanchors to hold the post securely, and preventing it from turning orbeing forced out by the drill.

Upon the outer end of post A is attached a collar, f, which has a screw,g, projecting from it at one side, and by this screw is attached thedrill-holder B. This holder B consists of the nut h, working on screw g,and formed with lugs 01 13, between which is attached the tongue 70 ofthe nut I, that carries the screw m.

The tongue 70 is hung on the cross-pin n, on which ,the nut l swings,and it is clamped in the desired position by a set-nut, 0, passingthrough one lug, i.

For convenience in applying the screw m to nut l, the latter is made intwo parts, or as a box, having the upper part, I, hung by a pin at oneside, and when in place the part Z is held by a locking-arm, p, or byany other suit able means.

The screw on carries at its inner end the drills q, and is fitted at itsouter end with a handle, 1', for operation of the drills.

It will be seen that by the above-described construction the screw misuniversally jointed, or nearly so, and with the parts in the relativeposition shown the drill can be swung horizontally and vertically todrill the hole at the desired angle.

The post may, however, be inserted with the drill at either side, orbeneath, instead of at the upper side, as shown.

This construction furnishes a very light, durable, and effectivedrilling apparatus. The parts are simple, and not liable to get out oforder.

The apparatus is easily carried in the hand, can be quickly applied andas readily removed, and is convenient for use. The features re sult in asaving of time, labor, expense, and room occupied by the drills.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- 1; The combination of the tubular post A,having nut h, with lugs 43 '5, the nut l, having having inclinedapertures e, the nut-carrying tongue k on a cross-pin, n, the set-nut 0,and screw-rod a, and the screw-socket b, having the screw m, as shownand described. spurs d pivoted to its head 0, as shown and describedCHARLES F. WILKINSON 2. In a mining-drill, the combination, with %E YALLISON- the hollow post A, of the screw a, head 0, and ARIO MOGHloosely-hung spurs d substantially as and for the purposes set forth.

Witnesses:

3. The post A, having collar f, with side (J. W. KLINE, screw, g, incombination with adrill-holder, B, J. D. HAYES.

